US3241147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna utilizing intermediate cuspate reflector to couple energy from feed to main reflector
Assignee: AT&T Inc
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Filing: 1963-12-16
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Granted: 1966-03-15
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Samuel P Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:12
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/18; H01Q19/19; H01Q19/191; H01Q19/02; H01Q19/021; H01Q19/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN ANTENNA SYSTEM ACCOMMODATING ELECTROMAGNETIC WAVES OF PREDETERMINED WAVELENGTH AND HAVING A PLANE WAVE FRONT AND COMPRISING A CONCAVE REFLECTOR AND CUSPATE REFLECTOR SITUATED ON A COMMON AXIS, SAID CUPSATE REFLECTOR FACING THE CONCAVE SURFACE OF SAID CONCAVE REFLECTOR, AND A FEED ELEMENT SITUATED NEAR THE INTERSECTION OF SAID AXIS AND SAID CONCAVE REFLECTOR, SAID FEED ELEMENT HAVING AN APERTURE FACING TOWARD SAID CUSPATE REFLECTOR AND ACCOMMODATING ELECTROMAGNETIC WAVES HAVING A PLANE WAVE FRONT, SAID APERTURE HAVING A DIAMETER OF AT LEAST SEVERAL OF SAID WAVELENGTHS, AND SAID CUSPATE REFLECTOR HAVING A DIAMETER AT LEAST AS LARGE AS THE APERTURE OF SAID FEED ELEMENT, SAID CUSPATE REFLECTOR THEREBY SERVING TO COUPLE ELECTROMAGNETIC WAVES BETWEEN SAID FEED ELEMENT AND SAID CONCAVE REFLECTOR.
Claim 2
Dependent Claim
121 words
AN ANTENNA SYSTEM ACCOMMODATING ELECTROMAGNETIC WAVES OF PREDETERMINED WAVELENGTH AND HAVING A PLANE WAVE FRONT AND COMPRISING A CONCAVE REFLECTOR AND CUSPATE REFLECTOR SITUATED ON A COMMON AXIS, SAID CUPSATE REFLECTOR FACING THE CONCAVE SURFACE OF SAID CONCAVE REFLECTOR, AND A FEED ELEMENT SITUATED NEAR THE INTERSECTION OF SAID AXIS AND SAID CONCAVE REFLECTOR, SAID FEED ELEMENT HAVING AN APERTURE FACING TOWARD SAID CUSPATE REFLECTOR AND ACCOMMODATING ELECTROMAGNETIC WAVES HAVING A PLANE WAVE FRONT, SAID APERTURE HAVING A DIAMETER OF AT LEAST SEVERAL OF SAID WAVELENGTHS, AND SAID CUSPATE REFLECTOR HAVING A DIAMETER AT LEAST AS LARGE AS THE APERTURE OF SAID FEED ELEMENT, SAID CUSPATE REFLECTOR THEREBY SERVING TO COUPLE ELECTROMAGNETIC WAVES BETWEEN SAID FEED ELEMENT AND SAID CONCAVE REFLECTOR.
References Cited (Backward Citations)
US2477694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |